Connectors with movable magnetic components and method of connecting devices

ABSTRACT

A connector for an electronic device has a housing with a peripheral surface and guides defining first and second paths. The second path extends from a first location proximate the peripheral surface to a second location farther from the peripheral surface and closer to the first path. A magnetic contact assembly in the housing is magnetically movable along the first path between a first position for joining the connector in data communication with an adjacent connector, and a second position withdrawn from the peripheral surface. A magnet in the housing and is movable by attraction to an adjacent connector along the second path, to magnetically hold the connector to an adjacent connector. The guides are configured so that the magnet and the magnetic contact assembly magnetically bias one another inwardly along the first and second paths.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority from U.S. provisional patentapplication No. 62/065,969, filed Oct. 20, 2014 and U.S. provisionalpatent application No. 62/140,119, filed Mar. 30, 2015 both of which areincorporated herein by reference in their entirety.

FIELD

This disclosure relates to magnetic connectors for connecting devices toone another.

BACKGROUND

Mobile electronic devices (e.g. mobile phones, tablet computers, laptopcomputers, or the like) are usually provided with a plurality ofconnection options which allow the devices to communicate with oneanother electronically, or to supply energy to the internal battery torecharge the battery, or to add functionality to the device, such asconnecting a peripheral device (e.g., keyboard, mouse, speakers, or thelike).

Connection of devices mechanically and/or electrically integrates themultiple devices to provide complementary functions. To establish suchconnections it is necessary to orientate the devices relative to oneanother and to facilitate mechanical and/or electrical communicationbetween the devices, e.g., by way of a contacts, ports, sockets, andother interfaces, which may be collectively referred to as connectors.The relative orientation of the devices is obtained through mechanicalconnections. It is desirable for these mechanical connections to berobust, simple to use, and aesthetically pleasing.

Electrical communication between the devices is typically providedeither through wires or through wireless communications. Wires or cablesare cumbersome to carry and increase the physicality of the devices.Provision must also be made on the device to permit connection of thecables to the device, which again presents aesthetic challenges to thedesign of the device. Wireless connections are less secure, with thepossibility of eavesdropping on communications, require more energy andtherefore consume more power from the battery and are subject tointerference from external sources.

Therefore, it is desired to provide an improved connector that obviatesor mitigates some or all of the above disadvantages.

SUMMARY

An example connector for an electronic device, comprises: a housinghaving a peripheral surface; first and second guides defining first andsecond paths, respectively, within the housing; a magnetic contactassembly received in the housing, the contact assembly magneticallymovable along the first path between a first, extended position forjoining the connector in data communication with an adjacent connector,and a second position withdrawn from the peripheral surface; a magnetreceived in the housing, and movable by attraction to an adjacentconnector along the second path, from a retracted position to anextended position closer to the peripheral surface and farther from thefirst path for magnetically holding the connector to the adjacentconnector; the second channel configured so that the magnet and themagnetic contact assembly magnetically bias one another along the pathsto the retracted position and the second position, respectively.

A method of connecting electronic devices, comprises: positioning aconnector of a first device adjacent a connector of a second device;magnetically drawing a magnet of the first device toward the seconddevice to magnetically hold the first and second devices together,thereby overcoming a magnetic bias between the magnet and a contactassembly of the first device; and magnetically drawing the contactassembly toward the second device to form a data connection.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described by way of exampleonly with reference to the accompanying drawings in which:

FIGS. 1A, 1B, and 1C are perspective views of a pair of electronicdevices, in three respective configurations;

FIGS. 2A, 2B are schematic views showing components of an electronicdevice;

FIGS. 2C, 2D, 2E, 2F, 2G and 2H are schematic views showing locations ofconnectors on an electronic device;

FIG. 3A is a top view of a connector with biasing side magnets; and

FIG. 3B is a schematic view of two connectors of FIG. 3A when engaged;

FIG. 3C is a perspective view of the connector of FIG. 3A;

FIG. 3D is a perspective cross-sectional view of the connector of FIG.3A;

FIG. 3E is a side cross-sectional view of the connector of FIG. 3A;

FIG. 3F is a top view of the connector of 3A, showing exampledimensions;

FIG. 4A is a top view of another connector with a biasing side magnet;and

FIG. 4B is a schematic view of two connectors of FIG. 4A when engaged;

FIGS. 5A, 5B and 5C are top, front and side cross-sectional views,respectively, of another connector;

FIGS. 5D and 5E are top and side cross-sectional views, respectively, oftwo connectors of FIG. 5A when engaged;

FIG. 6A is a top view of two connectors when engaged;

FIG. 6B is a side view of the connectors of FIG. 6A;

FIGS. 6C and 6D are perspective views of another connector;

FIGS. 7A and 7B are perspective views of another connector, whendisengaged and engaged, respectively;

FIGS. 8A, 8B and 8C are perspective, top and side views, respectively,of a magnet of the connector of FIG. 7A;

FIGS. 9A, 9B and 9C are perspective, front and top views, respectively,of another connector;

FIGS. 10A, 10B and 10C are perspective views of another connector;

FIGS. 11A, 11B and 11C are perspective, top and side cross-sectionalviews of another connector;

FIGS. 11D and 11E are side cross-sectional views of two connectors ofFIG. 11A when engaged in two different orientations;

FIG. 12A is a perspective view of a device including another connector;

FIGS. 12B and 12C are top and side cross-sectional views, respectively,of the connector of FIG. 12A;

FIG. 13A is a perspective view of two devices including connectors ofFIG. 12A, engaged in a first orientation;

FIGS. 13B and 13C are cross-sectional views of the connectors of FIG.13A;

FIG. 14A is a perspective view of two devices including connectors ofFIG. 12A, engaged in a second orientation;

FIGS. 14B and 14C are cross-sectional views of the connectors of FIG.14A;

FIG. 15A is a perspective view of two devices including connectors ofFIG. 12A, engaged in a third orientation;

FIGS. 15B and 15C are cross-sectional views of the connectors of FIG.15A;

FIGS. 16A and 16B are perspective views of another connector, indisengaged and engaged states, respectively;

FIGS. 17A and 17B are perspective views of another connector, indisengaged and engaged states, respectively;

FIGS. 18A, 18B and 18C are perspective, side and top views,respectively, of a component of the connector of FIG. 17A;

FIGS. 19A, 19B and 19C are perspective, front and top views,respectively, of another connector;

FIG. 20A is a perspective view of another connector in a disengagedstate;

FIG. 20B is a top view of the connector of FIG. 20A;

FIG. 20C is a top view of two connectors of FIG. 20A in an engagedstate;

FIG. 21A is side view of a connector assembly;

FIG. 21B is an exploded side view of the connector assembly of FIG. 21A;

FIG. 22A is a side view of a connector assembly;

FIG. 22B is an exploded side view of the connector assembly of FIG. 22A;

FIG. 22C is a schematic view of a plug of the connector of FIG. 22A;

FIG. 23A is a side view of a connector assembly;

FIG. 23B is an exploded side view of the connector assembly of FIG. 23A;and

FIGS. 24A and 24B are views of a sleeve of the connector assembly ofFIG. 23A.

DETAILED DESCRIPTION

Referring now to FIGS. 1A, 1B and 1C, a pair of electronic devices 10,12 each include a housing 14 defined by contiguous external surfaces 16.The devices 10, 12 may be any electronic devices that interface with oneanother and provide complementary functions. As depicted, each device isa smartphone. In other embodiments, one device may be smartphone and theother an accessory, such as a speaker. As further examples, one of thedevices may be a smartphone and the other a viewing screen, or both maybe viewing screens, or one may be a screen and the other a keyboard; onedevice may be a touchscreen enabled device and the other a router tocommunicate to the Internet, or one may be a camera and the other asmart phone to store images from the camera. These examples arenon-limiting and it will be apparent that many mutually complementarydevices exist that benefit from interconnection and interoperation.

As shown in FIG. 1A, the devices 10, 12 may be arranged side by sidewith a pair of surfaces 16, e.g. lateral surfaces, juxtaposed, typicallywhen in use, or, as shown in FIG. 1B, in a stacked configuration with adifferent pair of surfaces, e.g. front and back surfaces, juxtaposed forstorage or for alternative functions.

Devices 10, 12 include connectors 100 at each corner of their respectivehousings. As will be described in further detail below, each connectormay include one or more magnets movably mounted within the respectivedevice housing 14. Such magnets may be made from rare earth materials,such as Neodymium-Iron-Boron (NdFeB), Samarium-cobalt, as are generallyavailable. Such magnets may also be made from iron, nickel or othersuitable alloys. Alternatively or additionally, each connector mayinclude one or more members susceptible to movement by magnetic fields,e.g. metallic or ferromagnetic members. Indicators may be incorporatedinto the housing 14 to provide an indication of the state of theconnectors 100 (e.g., the location or orientation of a magnet). Theindicators may be conveniently made from a magnetically transparentmaterial, such as aluminum or copper that also enhances the aestheticsof the casing.

Devices 10, 12 may be used in a variety of positions. For example, twodevices may be placed side-by-side, with lateral surfaces 16 abutting,as shown in FIG. 1A. Devices may also be placed on top of one another,so that a top or bottom surface of one device abuts a top or bottomsurface of another device as shown in FIG. 1B. In some embodiments,devices may be placed side-by-side and pivoted relative to one another,as shown in FIG. 1C. In each of the depicted orientations, respectiveconnectors 100 of the two devices are positioned proximate one another.Other orientations are possible, as will be apparent.

With the devices 10, 12 in the position of FIG. 1A, a connector 100 ofone device 10 is positioned adjacent a connector 100 of the other device12. In this position, the magnets of the connectors 100 are adjacent oneanother. So positioned, the magnets of the adjacent connectors 100 mayinteract to magnetically or electrically engage one another. Forexample, one or more of magnets may slide or rotate so that that therespective north and south poles of adjacent magnets are aligned. Asfurther detailed below, in some embodiments, once the magnets areengaged, an electrical connection may be formed for providing dataand/or power paths. In some embodiments, the electrical connection maybe formed through contacts disposed on housings 14, the contacts beingin electrical communication with respective magnets. In anotherembodiment, the magnets may protrude through respective housing suchthat they contact each other directly. In other embodiments, electricalconnections may be formed through leads carried by the magnets, ratherthan the magnets themselves.

A significant magnetic force is applied between the components to retainthe components in the desired configuration. The magnets of connectors100 are mounted such that they are free to move under the magneticforces present from an adjacent magnet and thereby provide the requisitemagnetic field strength to retain the components in that configuration.

FIG. 2A depicts a schematic view of device 10 in greater detail. Asnoted, device 10 is a smartphone. However, the disclosure herein isapplicable to other types of electronic devices, such as a tabletcomputers, laptop computers, desktop computers, workstations, servers,portable computers, personal digital assistants, interactivetelevisions, video display terminals, gaming consoles, electronicreading devices, any other portable electronic device, or a combinationof these. Device 10 may be integrated with a household appliance (e.g.,a fridge, oven, washing machine, stereo, exercise bike, alarm clock, orthe like), or a vehicle (e.g., on a vehicle dashboard).

Device 10 has a housing 14 defining front and rear surfaces andperipheral surfaces 16. Device 10 includes at least one internal circuit20 which provides certain functions of device 10. for example, asdepicted in FIG. 2B, internal circuit 20 may include a processor 21, aninput/output (I/O) interface 23, a network interface such as a Wi-Fi orcellular radio 25, memory 27, and a power delivery circuit (not shown)for receiving power from an external input and converting orconditioning it for delivery to other components of device 10.Components of internal circuit 20 may be formed on a singlesemiconductor die such as a system-on-chip, or as a plurality ofcomponents formed on separate semiconductor chips, mounted to a printedcircuit board.

Processor 21 may be any type of processor, such as, for example, anytype of general-purpose microprocessor or microcontroller (e.g., anARM™, Intel™ x86, PowerPC™ processor or the like), a digital signalprocessing (DSP) processor, an integrated circuit, a programmableread-only memory (PROM), or any combination thereof.

Memory 27 may include a suitable combination of any type of electronicmemory that is located either internally or externally such as, forexample, random-access memory (RAM), read-only memory (ROM), compactdisc read-only memory (CDROM), electro-optical memory, magneto-opticalmemory, erasable programmable read-only memory (EPROM), andelectrically-erasable programmable read-only memory (EEPROM), or thelike.

I/O interface 23 enables device 10 to communicate through connectors100, e.g., to interconnect with other devices 10. I/O interface 23 alsoenables device 10 to interconnect with various input and outputperipheral devices. As such, device 10 may include one or more inputdevices, such as a keyboard, mouse, camera, touch screen and amicrophone, and may also include one or more output devices such as adisplay screen and a speaker.

Network interface 25 enables device 10 to communicate with other devices(e.g., other devices 10) by way of a network.

Device 10 may be adapted to operate in concert with one or moreinterconnected devices 10. In particular, device 10 may store softwarecode in memory 27 and execute that software code at processor 21 toadapt it to operate in concert with one or more interconnected devices10. The software code may be implemented in a high level procedural orobject oriented programming or scripting language, or a combinationthereof. The software code may also be implemented in assembly ormachine language.

As noted, device 10 also includes a plurality of connectors 100 forconnecting device 10 to external devices. Each connector 100 may becapable of connecting device 10 with, for example, smartphones,speakers, power supplies input/output peripherals or the like.Connectors 100 may be connected to one or more components of internalcircuit 20 for data or power transmission. In some embodiments,connectors 100 may for example provide universal serial bus (USB)connections to external devices. Device 10 may act as a host or clientdevice using such connections.

For enhanced flexibility, it will be appreciated that a connector 100 ateach corner of the housing 14, as depicted in FIG. 2A, is preferred.However, in different devices, it may not be necessary to provide aconnector in each corner, but rather distribute the connectors about thehousing at convenient locations. FIGS. 2C-2H illustrate,non-exhaustively, a variety of possible locations. Thus, connectors 24may be located centrally, as shown in FIG. 2C, inset from each corner asshown in FIG. 2D or at the corners as described above and shown in FIG.2E. It is also possible to arrange the connectors so that only apreferred orientation is available, for example by arranging theconnectors at the apexes of a triangle as shown in FIG. 2F, or onlyselected areas of the housing 14 as shown in FIG. 2H. A flexibleorientation can be provided by arranging the connectors along a majoraxis of the housing 14 as shown in FIG. 2G so that the connection isattained in either of two positions.

As noted above, in some embodiments, the magnets may be utilized toconnect the devices both mechanically and electrically.

An example connector 100 is shown in top view in FIG. 3A, with a tophousing surface omitted for purposes of illustration. This examplearrangement includes a magnetic contact assembly 101 with four magnets102 (which may be referred to as “core magnets”), received a connectorhousing 106 and movable in a path defined by a guide, such as a channel112. Connector 100 further includes two side magnets 104A and 104Bdisposed within connector housing 106. Housing 106 may be formed fromsuitable materials that are insulating and may be readily shaped, suchas, e.g., polybutylene terephthalate (PBT), polyethylene terephthalate(PET), or the like. Housing 106 may be integral with device housing 14or may be a separate component received within housing 14. Someembodiments described herein include a discrete connector housing (e.g.housing 106). In other embodiments, the connector housing is integralwith the device housing (e.g. housing 14). It should be understood thatthese possibilities are interchangeable. Accordingly, references to adevice housing (e.g. housing 14 could be replaced with a discreteconnector housing (e.g. housing 106) and vice-versa. A plurality ofexternal electrical terminals 108 are disposed on the surface 16 ofhousing 106 for contacting corresponding contacts of another connectorin electrical communication. External electrical terminals 108 may beformed from any suitable electrically conductive (e.g., metallic)material.

A plurality of leads 114 are electrically connected to magnets 102. Eachinternal contact corresponds to an external terminal 108 and iselectrically connected to one or more components of internal circuit 20(FIG. 2A). For example, one or more leads 114 may be connected to I/Ointerface 25 for data communication and one or more leads 114 may beconnected to a power delivery circuit for power transmission. Magneticcontact assembly 101 includes magnets 102 and leads 114 and may alsoinclude insulating elements (not shown), for example, nylon spacers,between magnets 102 to electrically insulate magnets 102 from oneanother. Thus, leads 114 and magnets 102 may carry different signals.

Magnetic contact assembly 101 is contained in a channel 112 formed inhousing 106. Channel 112 acts as a guide. Magnetic contact assembly isslidable along a path defined by channel 112 between a withdrawnposition in which magnets 102 are spaced inwardly from surface 16, asshown in FIG. 3A, and an extended position, in which magnets 102 abutterminals 108 to form an electrical connection between terminals 108 andthe respective leads 114.

As shown in FIG. 3A, magnets 102 share a common orientation, namely, anorientation that provides a north-south alignment parallel to surface16, indicated in FIG. 3A by arrows marked S-N. In such orientation, thenorth pole of one magnet 102 is adjacent the south pole of an adjacentmagnet 102. Further, in such orientation, each magnet 102 presents bothnorth and south poles to a terminal 108.

Side magnets 104A and 104B are disposed in channels 110A and 110B,respectively. Channels 110A and 110B are formed in housing 106 ofconnector 100 on right and left sides of core magnets 102, respectively.Channels 110A and 110B act as guides and define paths which extendinwardly away from surface 16 and converge towards one another andtoward channel 112. As shown, channel 110A is oriented at an angle θaway from the normal line of surface 16 while channel 110B is orientedat an opposite angle. Each of channels 110A and 110B has a first endproximate surface 16 and a second end farther away from surface 16 andcloser to channel 112 and thus, magnetic contact assembly 101. Each ofchannels 110A and 110B is formed such that each of magnets 104A and 104Bmay slideably move along a path defined by its respective channelbetween an extended position at the first end and a withdrawn positionat the second end, i.e., to be closer or farther from surface 16.

Further, channels 110A and 110B and side magnets 104A and 104B areshaped such that each side magnet may rotate within its respectivechannel. In particular, each of magnets 104A and 104B may rotate betweena first orientation in which the magnets are oriented with a north-southalignment parallel to surface 16 and a second orientation in which themagnets are oriented with a north-south alignment diagonal relative tosurface 16.

In the depicted embodiment, each of side magnets 104A and 104B has acylindrical shape, and the channels 110A and 110B are formed to alloweach side magnet to rotate about its cylindrical axis. In otherembodiments, each of side magnets 104A and 104B may have a differentshape allowing each to rotate between the noted first and secondorientations. For example, each of side magnets 104A and 104B may have aspherical shape, a hemispherical shape, an ovoid shape, etc.

FIG. 3A shows side magnets 104A and 104B each positioned at the secondend of the respective channel 110A or 110B, retracted from surface 16.Magnetic contact assembly 101 is also in a position retracted fromsurface 16 (and terminals 108). Magnets 102, 104A and 104B assume thedepicted positions when the connector 402 is not engaged with acomplementary connector 402, which may be referred to as a “resting”state, a “retracted”, or a “disengaged” state of the connector 402.

Magnets 102, 104A and 104B are drawn towards the depicted positions as aresult of mutual attraction between magnets 102, 104A and 104B. Inparticular, mutual attraction between magnets 102, 104A, and 104B causesside magnets 104A and 104B to move along a respective channel 110A or110B towards magnets 102 and towards one another. As side magnets 110Aand 110B move towards magnets 102, the angle of the channel causes theside magnets to move away from surface 16. The mutual attraction betweenmagnets 102, 104A, and 104B also draws magnets 102 away from surface 16.Further, this mutual attraction causes side magnets 104A and 104B torotate such that they have the same north-south alignment as magnets102, i.e., parallel to surface 16.

In this way, mutual attraction between magnets 102 of magnetic contactassembly 101 and side magnets 104A and 104B biases each of the magnetstowards a retracted position away from surface 16. Conveniently, nomechanical biasing (e.g., by way of a spring) is required. With magnets102, 104A, 104B in their retracted positions, connector 100 is in adisengaged state and terminals 108 are not electrically connected to theinternal connectors or to the internal device circuit. Further, whenconnector 100 is in the “disengaged” state and magnets 102, 104A, and104B are retracted from surface 16 magnetic flux at surface 16 may besignificantly reduced.

Conversely, connector 100 may be drawn into an engaged state, in whichmagnets 102, 104A, 104B are in their respective extended positions, byan adjacent connector.

FIG. 3B shows two connectors 100 having the arrangement depicted in FIG.3A. As shown, the two connectors 100 are engaged, such that eachconnector 100 is in an “engaged” state. When in this state, terminals108 and corresponding magnets 102 of the two connectors 100 may formelectrical connections between two devices 10 for power or datatransmission. In one specific example, each pair of correspondingmagnets 102 of the two connectors 100 may form a connection for aparticular USB pin/wire, e.g., VCC, D−, D+, GND. As a result, a USBconnection may be provided. In other embodiments, connector 100 may havea fewer or greater number of magnets 102 to provide for a greater numberof pins/wires. Connections other than USB (e.g., Firewire) may beprovided.

As shown, in the engaged state, side magnets 104A and 104B arepositioned in their extended positions at the first end of a respectivechannel 110A or 110B, proximate surface 16. Side magnets 104A and 104Bof a first device 10 are drawn to the first end, by sliding movementalong a respective channel 110A or 110B, as a result of attractionbetween the side magnets 104A and 104B and corresponding side magnets104A and 104B of a second device 10. So, when the connectors 100 of thetwo devices 10 are engaged, side magnet 104A of the first device 10 isaligned with and magnetically coupled with side magnet 104B of thesecond device 10. Similarly, side magnet 104B of the first device 10 isaligned with and magnetically coupled with side magnet 104A of thesecond device 10.

As side magnets 104A and 104B are drawn towards surface 16 along arespective channel 110A or 110B, the angle of the channel causes sidemagnets 104A and 104B to each move away from core magnets 102. Further,as side magnets 104A and 104B in the first device move along arespective channel 110A or 110B, mutual attraction between the sidemagnets 104A and 104B and the corresponding side magnets 104A and 104Bin the second device causes each of the side magnets to rotate withinits respective channel towards the second orientation noted above, inwhich the poles of magnets 104A, 104B are oriented diagonally to surface16. Consequently, in each device 10, mutual attraction between magnets102, 104A, and 104B decreases, and the bias of magnets 24 towards aretracted position is reduced. While magnets 104A, 104B are aligned withmagnets 102 (as in the disengaged position), magnetic attraction betweenmagnets 102, 104A, 104B may be sufficiently strong that an adjacentmagnet 102 of another connector cannot cause magnet 102 to moveoutwardly. However, rotation of side magnets 104A, 104B due to thepresence of an adjacent magnet 104A, 104B reduces magnetic attractionbetween magnets 102, 104A, 104B. Thus, such rotation releases magnets102 from the inwardly-biased disengaged position; once magnets 104A,104B are rotated toward their diagonal orientations, magnet 102 can bedrawn outwardly toward the engaged position by an adjacent magnet 102 ofanother connector.

In each device 10, movement of side magnets 104A and 104B towardssurface 16 draws magnets 102 towards the surface by magnetic attraction.Further, as magnets 102 of the first device move towards the surface,they become drawn by the corresponding magnets 102 in the second device10, and vice versa. In this way, magnets 24, 104A and 104B of eachdevice 10 collectively move towards the engaged positions shown in FIG.3B.

As noted, when the connectors 100 are engaged, each side magnet 104A and104B may have a north-south alignment that is diagonal relative tosurface 16. The attraction between a side magnet 104A/104B of a device10 and a complementary side magnet 104B/104A of an engaged device 10tends to cause each side magnet to rotate towards an orientationperpendicular to surface 16. Meanwhile, the attraction between a sidemagnet 104A/104B and core magnets 102 in the same device tends to causeeach side magnet to rotate towards an orientation parallel to surface16. As a result, when the connectors 100 are engaged, each side magnet104A and 104B maintains a diagonal orientation. Thus, when engaged,magnets 104A, 104B pull devices 10 toward one another and magneticallyhold the devices together.

Each of channels 110A and 110B may be oriented at an angle θ (FIG. 3A)between 0 degrees and 90 degrees. In some embodiments, the angle θ maybe between 0 degrees and 20 degrees. As will be appreciated, a largerangle θ causes side magnets 104A and 104B to move farther away frommagnets 102 when a connector 100 transitions from a resting state to anengaged state.

Magnets 102, 104A, 104B and channels 112, 110A, 110B may be configuredto ensure that, when two connectors 100 are placed in abutment asdepicted in FIG. 3B, attraction between magnets 102, 104A or 104B of oneconnector 100 and the corresponding magnets 102, 104A, 104B of the otherconnector 100 is sufficient to overcome the magnetic attraction betweenmagnets 102, 104A, 104B of a single connector biasing the connector tothe disengaged state. In other words, the configuration of magnets 102,104A, 104B and channels 112, 110A, 110B is such that two connectors 100can overcome the magnetic bias toward the disengaged state to draw oneanother into the engaged state. For example, magnets 104A 104B may be atleast twice as far from one another as they are from device edge 16.Suitable sizes, orientations and spacing of channels 112, 110A, 110Bdepends on the strengths of magnets 102, 104A, 104B and will be apparentto skilled persons based on the present disclosure. In an example,magnets 102, 104A, 104B are neodymium-iron-boron (NdFeB) magnets. FIG.3F depicts an example connector 100, annotated with references toidentify example dimensions. Corresponding example values of thosedimensions are listed in table 1.

TABLE 1 Ed Ht Hy Hθ Ey H/ Px1 Px2 Py Pgx1 Pgx2 Pgx3 Pgy1 Pgy2 Cy CHx CHy5 0.2 0.25 11 2.95 3.62 1.5 1.5 8 1.59 1.6 1.6 2 0.5 0.5 1.6 0

FIG. 3C is a perspective view of a portion of device 10 including aconnector 100 shown in FIG. 3A. For the sake of illustration, the topsurface of this portion is shown as being cut away to reveal magnets102, channels 110A/110B, and side magnets 104A/104B within. As shown inFIG. 3C, the connector 100 is in a disengaged state with magnets 102 andmagnets 104A/104B in their respective withdrawn positions retracted fromsurface 16.

As shown in FIG. 3C, each magnet 24 has a disk shape. However, in otherembodiments, each magnet 102 may have a different shape. Further, theremay be a fewer or greater number of magnets 102. The arrangement ofmagnets 102 shown in FIG. 3C may be replaced with another arrangement ofmagnets, as described herein. Similarly, although four terminals 108 areshown, there may be a fewer or greater number of terminals. Though theconnector of FIG. 3C has one magnet 102 corresponding to each terminal108, some embodiments may have more than one terminal per magnet.

FIG. 3D is a perspective cross-sectional view of the connector 100 ofFIG. 3C, taken along line F-F. FIG. 3E is a side cross-sectional view ofthe connector 100 of FIG. 3C, taken along line F-F. As best seen inFIGS. 3D and 3E, channel 110A/110B has a shape complementary tocylindrical side magnet 104A/104B, allowing magnets 104A/104B to slideand rotate within respective channels 110A/110B in manners describedherein.

In some embodiments, magnets 102 may be replaced with passive magneticmaterials. For example, magnets 102 may be replaced with ferrouselements or other magnetizable elements. In such embodiments, movementof side magnets 104A, 104B to their engaged positions may magneticallydraw contact assembly 101 to its engaged position.

In some embodiments, connectors may have only one side magnet. Forexample, FIG. 4A depicts a top view of one such connector 100′, which isidentical to connector 100 except that it has only a single side magnet104, received in a channel 110. FIG. 4B depicts a top view of twoconnectors 100′ in an engaged state. Top housing surfaces are omitted inFIGS. 4A-4B for purposes of illustration

In some embodiments, the magnetic contact assembly may include leads onthe outward-facing side of magnets 102.

For example, FIGS. 5A-5B depict top and front views, respectively of aconnector 200, with a top housing surface omitted in FIG. 5A forpurposes of illustration. FIG. 5C depicts a side cross-sectional view ofconnector 200 along line C-C shown in FIG. 5A. Connector 200 isgenerally identical to connector 100 except as otherwise described, andlike components are identified with like reference characters.

As is best shown in FIGS. 5A, 5C, connector 200 has a magnetic contactassembly 201 including leads 116. Each lead 116 is connected to internalcircuit 20 of device 10. In an example, each lead 116 may correspond toa particular USB pin (e.g., VCC, D−, D+, GND) such that connector 200may provide a USB connection.

Leads 116 are wrapped around magnets 102 such that portions of leads 116are positioned on the outer side of magnets 102, facing contacts 108.Leads 116 may be electrically insulated from magnets 102, for example,by an insulative sleeve or coating applied to one or both of leads 116and magnets 102. In such embodiments, insulation between magnets 102 maybe omitted. Alternatively, leads 116 may electrically contact magnets102, in which case magnets 102 may be insulated from one another toisolate signals on different leads 116.

Leads 116 may be formed from a ferrous material and of sufficientconductivity to allow for high speed data transfer. Their thickness maybe sufficiently low to allow for high flexibility.

Leads 116 may magnetically adhere to the adjacent core magnets 102.Leads 116 may, for example, be coiled around magnets 102 and heldagainst magnets 102 by magnetic attraction. As magnets 102 move, thecoiled leads 116 may change in shape slightly. For example, when magnets102 move inwardly, the coil may tighten as magnetic attraction holdsleads 116 tightly to magnets 102. Conversely, when magnet 102 movesoutwardly, the coil may stretch.

FIGS. 5D, 5E depict top and side cross-sectional views, respectively, ofa pair of connectors 200 in their engaged states, the latter taken atline E-E of FIG. 5D. Top housing surfaces are omitted in FIG. 5D forpurposes of illustration. As is best shown in FIG. 5E, in the engagedstate, magnets 102 urge leads 116 outwardly against contacts 108. Thus,an electrical connection may be formed through lead 116 and anassociated contact 108 of one connector 200, and a corresponding lead116 and contact 108 of another connector. As noted, the electricalconnection may be used for power or data transmission.

In some embodiments, contacts 108 may be omitted, such that magnets 102or leads 116 protrude from housing 14 in the engaged state. FIGS. 6A and6B show two connectors 200′ exemplary of such an embodiment, the latterview taken along line B-B of FIG. 6A in top and side cross-sectionviews, respectively, the latter taken at line B-B of FIG. 6A. Tophousing surfaces are omitted in FIG. 6A for purposes of illustration.Connectors 200′ are identical to connectors 200 except as otherwisedescribed and like components are indicated with like numerals.

As best shown in FIG. 6B, Connectors 200′ lack contacts 108. Instead,connectors 200′ have openings 118 through which magnets 102, leads 116protrude in the engaged state. Thus, in the engaged state, electricalconnections are directly formed between leads 116 of the two connectors200′.

In some embodiments, leads 116 may be bonded to core magnets 102, forexample, using adhesives. Leads 116 may be bonded to a flexiblesubstrate, constraining and insulating the individual traces. Forexample, FIGS. 6C-6D depict perspective views, of connectors 200″ indisengaged and engaged states, respectively, in which leads 116 areincorporated in a conventional flat flexible cable (FFC) 117, which maybe bonded to magnets 102. Bonding of leads 116 to a substrate may allowfor tighter pitch between leads 116, relative to individually attachingleads 116 to magnets 102.

In other embodiments, magnets 102 of two connectors may directly contactone another, rather than leads 116, an electrical connection may beformed between magnets 102.

In each of connectors 100, 200, 200′, magnets 102 are disc-shaped. Inother embodiments, magnets may be provided in different shapes. Forexample, magnets 102 may be replaced with bar magnets. In addition, ineach of connectors 200, 200′, each magnet 102 is associated with onelead 116. In other embodiments, magnets 102 may be associated withmultiple leads. For example, magnets 102 may be replaced with a singlebar magnet, which may be associated with any number of leads.

As depicted, magnets 102 are oriented with their poles aligned generallyparallel to peripheral surface 16. Likewise, magnets 102 present to oneanother contacting surfaces 119 (FIG. 5D) that are generally parallel tothe north-south alignment of the magnets. In such an arrangement,attractive magnetic forces between opposing magnets 102 may be greatestat the edges of the contacting faces. In other words, magnetic flux maybe greatest proximate the edges. Accordingly, in an example, two leadsmay be associated with each magnet 102, each lead being alignedproximate an edge of the contacting surface 119 of the magnet 102, inthe vicinity of the maximum magnetic attractive force. Such aconfiguration may promote strong electrical connection betweencorresponding leads.

In other embodiments, magnets 102 may be oriented with their north-southpoles generally perpendicular to surface 16 and to the contactingsurfaces magnets 102 present to one another.

FIGS. 7A and 7B each is a perspective view of a connector 300, with tophousing surfaces omitted for purposes of illustration. In particular,FIG. 7A depicts connector 300 in a disengaged (retracted or resting)state and FIG. 7B depicts connector 300 in an engaged (extended) state.In some embodiments, the shaping of components within connector 300allows connector 300 to be formed to be substantially thinner (e.g.,having a lower profile) than connector 100.

Unlike connector 200 which includes four core magnets 102 disposedwithin a housing, connector 300 includes a magnetic contact assembly 120with a single magnet 122. FIGS. 8A-8C depict perspective, top elevationand side elevation views, respectively, of magnet 122.

Assembly 120 is disposed within a connector housing 80. As detailedbelow, assembly 120 may move (e.g., slide) within housing 80 asconnector 300 transitions between its disengaged and engaged states. InFIGS. 7A and 7B, the top surface of housing 80 is not shown, for clarityof illustration.

Assembly 120 includes a single magnet 122. As best seen in FIGS. 8A, 8B,and 8C, magnet 122 is T-shaped, and includes a crossbar portion 126 anda stem portion 124. Crossbar portion 126 is substantially rectangular inshape. Stem portion 124 has approximately the same height as crossbarportion 126, but is smaller in width and length. Stem portion 124 has arounded end 128, in the shape of a semi-cylinder. During operation, end128 of stem portion 124 may 124 from an opening in surface 16 of housing80 (FIG. 7B). In this way, stem portion 124 may engage another connector(e.g., another connector 300) to form magnetic and electricalconnections therewith, or to form a connection with a metal surface.

The rounded shape of end 128 allows two connected connectors to berotated relative to one another without interrupting the mechanical orelectrical connections therebetween. This rounded shape also providespoints of contact between two connected connectors along a single line,thereby localizing contact forces to this line.

Assembly 120 also includes a plurality of conductive wires 130. Eachwire 130 may carry a separate electrical signal (data or power). In onespecific example, each wire 130 may correspond to a particular USB pin(e.g., VCC, D−, D+, GND) such that connector 300 may provide a USBconnection.

The plurality of conductive wires 130 are electrically isolated. Asshown, the wires are spaced from one another. Further, to preventconduction through magnet 122, each wire 130 may include an insulatingbacking material. Alternatively or additionally, magnet 122 may becoated with an insulating material such as enamel, plastic, or the like.

In the depicted embodiment, assembly 120 includes four wires 130.However, in other embodiments, assembly 120 may include a fewer orgreater number of wires 130. Further, connections other than USB (e.g.,Firewire) may be provided.

In the depicted embodiment, each wire 130 extends over the coatedsurface of magnet 122 along the length of assembly 120 and wraps aroundrounded end 128. In this way, the part of wire 130 extending over end128 may contact parts (e.g., wires/pins) of another connector forestablishing electrical connections therewith.

In another embodiment, channels may be formed on the surface of magnet122, and wires 130 may be received in and may extend along thesechannels. The channels may have a depth corresponding to the thicknessof wires 130. Accordingly, when wires 130 are received in the channels,the top surface of the wires 130 may be flush with the top surface ofmagnet 122. This allows, for example, electrical connection betweenwires 130 and contacts pressed to the top surface of magnet 122.Conveniently, providing these channels may allow the overall height ofassembly 120 to be reduced in some embodiments.

Referring now to FIGS. 7A and 7B, housing 80 may be formed from suitablematerials that are insulating and may be readily shaped, such as PBT,PET, or the like. Housing 80 includes a cavity 82 having a height (H)and width (W) sized to correspond to the height (h) and width (w) ofassembly 120. Cavity 82 has a length (L) greater than the length (l) ofassembly 120. Accordingly, assembly 120 may move within cavity 82 alonglength (L) between a first position in which assembly 120 is adjacent aback wall of housing 80 (when connector 300 is in its disengaged state),and a second position in which assembly 120 is adjacent a front wall ofhousing 80 when connector 300 is in its engaged state. In the secondposition, stem portion 124 extends through an opening in the front wall(e.g., to connect with another connector, a metal surface, etc.).

Connector 300 also includes two side magnets 104A and 104B disposed,respectively, in channels 110A and 110B. Magnets 104A/104B and channels110A/110B are provided in connector 300 to be substantially similar tothe same components in connectors 100,200. Further, magnets 104A and104B interact with assembly 120 in connector 300 in substantially thesame manner that magnets 104A and 104B interact with core magnets 102 inconnectors 100, 200.

So, channels 110A and 110B are formed in connector 300 on right and leftsides of assembly 120, respectively. Channel 110A is oriented at anangle θ (see FIG. 3A for angle θ) away from the normal line of surface16 while channel 110B is oriented at an opposite angle. Each of channels110A and 110B has a first end proximate surface 16 and a second endfarther away from surface 16. Each of channels 110A and 110B is formedsuch that magnets 104A and 104B may slideably move within its respectivechannel between the first end and the second end, i.e., to be closer orfarther from surface 16.

Further, channels 110A and 110B and side magnets 104A and 104B areshaped such that each side magnet may rotate within its respectivechannel. In one example, assembly 120 may have a magnetic orientation asshown for magnets 102 in FIG. 3A, namely, with a north-south alignmentparallel to surface 16 and north being in the direction of channel 110B.In this example, each of magnets 104A and 104B may rotate between afirst orientation in which the magnets are oriented with a north-southalignment parallel to surface 16 (e.g., as shown in FIG. 3A) and asecond orientation in which the magnets are oriented with a north-southalignment diagonal relative to surface 16 (e.g., as shown in FIG. 3B).

In the depicted embodiment, each of side magnets 104A and 104B has acylindrical shape, and channels 110A and 110B are formed to allow eachof side magnets 104A and 104B to rotate about its cylindrical axis. Inother embodiments, each of side magnets 104A and 104B may have adifferent shape allowing each to rotate between the noted first andsecond orientations. For example, each of side magnets 104A and 104B mayhave a spherical shape, a hemispherical shape, an ovoid shape, etc.

FIG. 7A shows side magnets 104A and 104B each positioned at the secondend of the respective channel 110A or 110B, retracted from surface 16.Assembly 120 is also in a position retracted from surface 16 andadjacent a back wall of housing 80. Assembly 120 and side magnets 104Aand 104B assume the depicted positions when the connector 300 is in itsdisengaged state.

Assembly 120 and side magnets 104A and 104B are drawn towards thedepicted positions as a result of mutual attraction between assembly 120and magnets 104A and 104B. In particular, mutual attraction betweenassembly 120 and side magnets 104A and 104B causes side magnets 104A and104B to move along a respective channel 110A or 110B towards assembly120. As side magnets 104A and 104B move towards assembly 120, the angleof their respective channels 110A and 110B causes the side magnets tomove away from surface 16. The mutual attraction between assembly 120and side magnets 104A and 104B also draws assembly 120 away from surface16. Further, this mutual attraction causes side magnets 104A and 104B torotate such that they have the same north-south alignment as assembly120, i.e., parallel to surface 16.

In this way, mutual attraction between assembly 120 and side magnets104A and 104B biases them towards a retracted position away from surface16. Conveniently, no mechanical biasing (e.g., by way of a spring) isrequired. Further, when connector 300 is in its disengaged state andassembly 120 and magnets 104A and 104B are retracted from surface 16,magnetic flux at surface 16 may be significantly reduced.

FIG. 7B shows connector 300 with side magnets 104A and 104B eachpositioned at the first end of the respective channel 110A or 110B,i.e., proximate surface 16. At the same time, assembly 120 is a positionproximate surface 16 such that stem portion 124 extends past surface 16.Assembly 120 and side magnets 104A and 104B assume the depictedpositions when the connector 300 is in its engaged state.

Side magnets 104A and 104B of the connector 300 (which may referred tothe first connector 300) are drawn to the first end of the respectivechannel 110A or 110B by sliding movement along a respective channel 110Aor 110B, as a result of attraction between the side magnets 104A and104B and corresponding side magnets 104A and 104B of a second connector300 (not shown).

As side magnets 104A and 104B are drawn towards surface 16 along arespective channel 110A or 110B, the angle of the channel causes sidemagnets 104A and 104B to each move away from assembly 120. Further, asside magnets 104A and 104B in the first connector 300 move along arespective channel 110A or 110B, mutual attraction between the sidemagnets 104A and 104B in the first connector 300 and the correspondingside magnets 104A and 104B in the second connector 300 causes each ofthe side magnets to rotate within its respective channel towards thesecond orientation noted above. Consequently, in each connector 300,mutual attraction between assembly 120 and side magnets 104A, and 104Bdecreases, and biasing towards a retracted position is reduced.

In each connector 300, movement of side magnets 104A and 104B towardssurface 16 draws assembly 120 towards surface 16 Further, as theassembly 120 of the first connector 300 moves towards surface 16, itbecomes drawn by the assembly 120 of the second connector 300, and viceversa. In this way, assemblies 120, and side magnets 104A and 104B ofthe first and second connectors 300 collectively move towards theengaged positions shown in FIG. 49B.

When the two connectors 300 are engaged, side magnet 104A of the firstconnector 300 is aligned with and magnetically coupled with side magnet104B of a second connector 300 (in substantially the same manner asshown in FIG. 3B for connectors 100). Similarly, side magnet 104B of thefirst connector 300 is aligned with and magnetically coupled with sidemagnet 104A of the second connector 300.

When two connectors 300 are engaged, each side magnet 104A and 104B mayhave a north-south alignment that is diagonal relative to surface 16(e.g., as shown in FIG. 3B for connectors 100).

Each of channels 110A and 110B may be oriented at an angle θ (e.g., asshown in FIG. 3A) between 0 degrees and 90 degrees. In some embodiments,the angle θ may be between 0 degrees and 20 degrees. As will beappreciated, a larger angle θ causes side magnets 104A and 104B to movefarther away from assembly 120 when a connector 300 transitions from aresting state to an engaged state.

FIGS. 9A, 9B, and 9C are, respectively, a perspective view, a frontview, and a top view of connector 300 with a top surface 82 of housing80 shown. As depicted, top surface 82 includes a plurality of electricalcontacts 84, each in electrical communication with a corresponding wire130 of assembly 120. Electrical contacts 84 allow electrical signalscarried by wires 130 to be provided to internal circuitry of a device inwhich connector 300 is disposed. For example, electrical contacts 84 mayserve as solder points for connection of electrical wiring (not shown).

In FIGS. 9A, 9B, and 9C, connector 300 is shown to be in its engagedstate such that assembly 120 extends out of housing 80 (as best seen inFIG. 9C).

In the embodiment of FIGS. 7A and 7B, assembly 120 is formed from asingle core magnet 122. However, in other embodiments, assembly 120 maybe formed from multiple core magnets 122. For example, FIG. 10A shows aconnector 300′ having an assembly 120 formed from two core magnets 122.The core magnets 24 may have the same magnetic orientation (e.g., asshown in FIG. 10B) or different magnetic orientations (e.g., as shown inFIG. 10C). Top housing surfaces are omitted in FIGS. 10A-10C forpurposes of illustration.

As depicted in FIGS. 3A-10B, device 10 has a flat peripheral surface 16.In other embodiments, the device may have curved surfaces. For example,FIGS. 11A-11C depict perspective, top and side cross-sectional views,respectively of a connector 400, the latter taken at line C-C shown inFIG. 11B. For purposes of illustration, the top housing surface isomitted from FIG. 11B.

Connector 400 is formed in device housing 14′, which has a curved sidesurface 16′. Side surface 16′ has a window 132 at the end of channel112. Connector 400 is otherwise identical to connector 200 describedabove, and like components are identified with like numerals.

FIGS. 11A-11C depict connector 400 in a disengaged state, with magnets102, 104A, 104B withdrawn. In the engaged state of connector 400,magnets 102 and leads 116 protrude through window 132 and cooperate withperipheral surface 16′ to define a curved surface for interfacing withanother connector 400. Once two connectors 400 are brought into abutmentand engage one another, they may form a joint that can be pivoted aroundsurface 16′. For example, FIG. 11D shows a side cross sectional view oftwo connectors engaging one another and positioned at approximately a 90degree angle to one another. Leads 116 are urged into contact with oneanother by magnets 102, forming an electrical connection for data orpower transmission. FIG. 11E shows connectors 400 engaging one anotherat approximately a 180 degree angle. Since magnets 102 and leads 116define a curved contact surface, connectors 400 may be pivoted betweenthe positions of FIGS. 11D AND 11E without breaking the electricalconnection.

Connectors 100, 200, 300, 400 have magnets 102, 104, 104A, 104B mountedin channels to move generally in a single plane. In particular, magnets102, 104, 104A, 104B generally move in a plane parallel to the front andrear surfaces of the respective device 10.

In some embodiments, magnets may be mounted such that they are movablein two different planes, which may be approximately orthogonal to oneanother. For example, FIG. 12A depicts a perspective view of a device 10with a connector 500 with magnets operable to slide laterally (toward aside of the device) and to slide forward and backward (toward thedevice's front or back surfaces).

Connector 500 includes a plurality of core magnets 140, similar to coremagnets 102, mounted in a channel 142. Channel 142 leads to a firstwindow 134 in a lateral surface of device 10 and a second window 140 ina front surface of device 10.

FIG. 12B depicts an enlarged top cross-sectional view of connector 500in its disengaged state. As noted, connector 500 includes a plurality ofcore magnets 140 slidably received in a channel 142. As depicted, coremagnets 140 are disk magnets, however, as will be apparent, othersuitable types of magnets may be used.

Connector 500 further includes a side magnet 144. Side magnet 144 isspherical. Side magnet 144 is slidably and rotatably received in achannel 146. Channel 146 extends from the interior of housing 14 towardside, top, front and back edges of the housing to define athree-dimensional envelope within which magnet 144 is movable. Inparticular, magnet 144 is movable between a first position, shown inFIG. 12B, in which magnet 144 is withdrawn relative to each of the side,top, front and back surfaces of housing 14; a second position (FIG. 13B)in which magnet 144 is extended toward a lateral surface of housing 14to switch connector 500 to an engaged state, and a third position (FIG.14B) in which magnet 144 is extended toward a front or back surface ofhousing 14 to switch connector 500 to an engaged state. Channel 146defines a first path between the first and second positions, identifiedby the arrows marked H-H in FIG. 12B, and a second path between thefirst and third positions, identified by the arrows marked V-V in FIG.12C.

The first position of magnet 144 (FIG. 12B) is the point in channel 146closest to core magnets 140. Accordingly, in the absence of anotherconnector, magnetic attraction between magnet 144 and magnets 140 biasesmagnet 144 to the first position. Magnetic attraction likewise biasesmagnets 140 to a withdrawn position within channel 142 substantially asdescribed above with reference to connectors 100, 200, 300, 400.Magnetic attraction between magnet 144 and magnets 140 may also causemagnet 144 to rotate into alignment with magnets 140. As depicted, thenorth-south alignment of magnets 140 is parallel to the lateral surfaceof housing 14. Accordingly, magnet 144 is rotated so that itsnorth-south poles are parallel to the lateral surface of housing 14.

As depicted in FIG. 13A, two devices 10 may be placed side-by-side sothat connectors 500 abut one another on lateral sides of the devices 10.FIG. 13B shows a top sectional view of two connectors 500 in such acondition FIG. 13C shows a side cross-sectional view of the connectors500 taken along line C-C in FIG. 13B.

In a manner similar to that described above with reference to connector100, magnets 144 of adjacent connectors 500 magnetically attract oneanother sufficiently to overcome the bias between each magnet 144 andits respective core magnets 140. Magnets 144 are pulled toward oneanother and toward lateral surface 16 of housing 14. As a result of suchattraction, magnets 144 move along path H-H (FIG. 12B) to the secondposition, depicted in FIG. 13B. Magnets 144 may also rotate to presentopposite poles to one another. Meanwhile, continued attraction betweenmagnets 140 and magnets 144 may hold magnets 144 in an orientation withnorth-south poles diagonal to lateral surface 16.

As described above with reference to connector 100, as side magnet 144is pulled toward lateral surface 16 and rotated, its biasing effect onmagnets 140 is reduced. Accordingly, magnets 140 of the two connectors500 attract one another and cause one another to move toward extended(engaged) positions. In the engaged position, magnets 102 may protrudethrough window 134 of housing 14.

As depicted in FIG. 14A, two devices 10 may be placed in a Tconfiguration so that connectors 500 abut one another, with a top orbottom surface of one device abutting a lateral surface of anotherdevice. FIG. 14B shows a top sectional view of two connectors 500 insuch a condition. FIG. 14C shows a side cross-sectional view of theconnectors 500 taken along line C-C in FIG. 14B.

Magnets 144 of adjacent connectors 500 magnetically attract one anothersufficiently to overcome the bias between each magnet 144 and itsrespective core magnets 140. Magnets 144 are pulled toward one another.In particular, one magnet 144 is pulled toward lateral surface 16 of itsdevice housing 14 and moves along path H-H (FIG. 12B) to the secondposition. A magnet 144 of the other device is pulled toward a front orback surface of its device housing 14 and moves along path V-V (FIG.12C) Magnets 144 may also rotate to present opposite poles to oneanother. As will be apparent, during movement between the first andthird positions, magnets 144 may rotate partly about each of a pluralityof axes. Continued attraction between magnets 144 and magnets 140 mayhold magnets 144 in an orientation with north-south poles diagonal tothe front or back surface of the device housing 14.

As described above with reference to connector 100, as side magnet 144is pulled toward lateral surface 16 and rotated, its biasing effect onmagnets 140 is reduced. Accordingly, magnets 140 of the two connectors500 attract one another and cause one another to move toward extended(engaged) positions. In the engaged position, magnets 140 of one devicemay protrude through window 134 of that device's housing 14, whilemagnets 140 of the other device may protrude through window 136 of theother device's housing 14.

As depicted in FIG. 15A, two devices 10 may be placed atop one anotherso that connectors 500 abut one another, with a top or bottom surface ofone device abutting a top or bottom surface of another device. FIG. 15Bshows a side sectional view of two connectors 500 in such a condition,taken along line B-B in FIG. 15A. FIG. 15C shows a side cross-sectionalview of the connectors 500 taken along line C-C in FIG. 15B.

Magnets 144 of adjacent connectors 500 magnetically attract one anothersufficiently to overcome the bias between each magnet 144 and itsrespective core magnets 140. Magnets 144 are pulled toward one another.In particular, each magnet 144 is pulled toward a front or rear surfaceof its device housing 14 and moves along path V-V (FIG. 12B) to thethird position. Magnets 144 may also rotate to present opposite poles toone another. As will be apparent, during movement between the first andthird positions, magnets 144 may rotate partly about each of a pluralityof axes. Continued attraction between magnets 144 and magnets 140 mayhold magnets 144 in an orientation with north-south poles diagonal tolateral the front or back surface of the device housing 14.

As described above with reference to connector 100, as side magnet 144is pulled toward lateral surface 16 and rotated, its biasing effect onmagnets 140 is reduced. Accordingly, magnets 140 of the two connectors500 attract one another and cause one another to move toward extended(engaged) positions. In the engaged position, magnets 140 of each devicemay protrude through window 136 of that device's housing 14

In an example, channels 146 may be configured so that, in the first(disengaged) position, the minimum distance between magnets 144 andmagnets 140 is approximately 2.9 mm; in the second position (FIG. 13B),the minimum distance between magnets 144 and the lateral surface ofhousing 14 is about 0.3 mm; and in the third position (FIG. 15B), theminimum distance between magnets 144 and the front or rear surface ofhousing 14 is about 0.7 mm.

FIGS. 16A and 16B each is a perspective view of a connector 602, withtop surfaces omitted for purposes of illustration. Connector 602 omitschannels 110A/110B and side magnets 104A/104B of connector 300, andincludes a ferrous stop 86 disposed along a rear wall of housing 80 incavity 82. Connector 602 is otherwise substantially similar to connector300. In FIGS. 16A and 16B, the top surface of housing 80 is not shown,for clarity of illustration.

Attraction between assembly 120 and ferrous block 86 biases assembly 120to a retracted position within connector 602 (FIG. 16A). However, whenconnector 602 is brought into engagement with a corresponding connector602, attraction between the two connectors 602 overcomes the biasingforce provided by ferrous stop 86 and causes assembly 120 to move alongthe length of cavity 82 towards surface 16. So, assembly 120 moves to anextended position within connector 602 (FIG. 16B) such that connector602 transitions to an engaged state, and forms magnetic and electricalconnections with the corresponding connector. When the connectors aredisconnected, attraction between assembly 120 and ferrous block 86 movesassembly 120 back to its retracted position.

In an embodiment, ferrous block 86 may be formed from high-iron contentcarbon steel. However, ferrous block 86 may be formed from othermagnetizable materials. In an embodiment, ferrous block 86 may bereplaced with a biasing magnet disposed along the rear wall of housing80 in cavity 82. As will be appreciated, this biasing magnet is selectedto attract assembly 120 more weakly than a corresponding connector towhich connector 602 may connect.

FIGS. 17A and 17B each is a perspective view of a connector 702.Connector 702 omits assembly 120, and includes an assembly 120′.Connector 702 is otherwise substantially similar to connector 602. InFIGS. 17A and 17B, the top surface of housing 80 is not shown, forclarity of illustration.

Assembly 120′ differs from assembly 120 in that electrical wires 130 areomitted. Instead, assembly 120′ includes a sleeve 88 that covers atleast a part of magnet 122 including rounded end 128. Assembly 120′ isotherwise substantially similar to assembly 122.

As best seen in FIGS. 18A, 18B, and 18C, sleeve 88 includes a first end90 that wraps around rounded end 128 of magnet 122, and a second end 92that extends towards the interior of housing 80.

The outer surface of sleeve 88 (at least at end 90) presents an array ofcontacts for forming electrical connections with another connector. In aspecific example, each of these contacts may form a connection for aparticular USB pin/wire, e.g., VCC, D−, D+, GND. As a result, a USBconnection may be provided. In other embodiments, the sleeve may allowfor a fewer or greater number of electrical connections. Connectionsother than USB (e.g., Firewire) may be provided. In embodiments in whichsleeve 88 provides insulation between the contacts and magnet 122,further insulation is not required. For example, magnet 122 need not becoated with an insulating material.

In an embodiment, sleeve 88 may be a conventional flexible flat cable(FFC).

Sleeve 88 is attached to magnet 122 (e.g., by way of adhesive) such thatsleeve 88 and magnet 122 move together, e.g., when connector 702transitions between an engaged state and a disengaged state. Likeassembly 120, assembly 120′ is biased to a retracted position, and movesto an extended position when connector 702 is brought into engagementwith a complementary connector. When connector 702 is in a disengagedstate (FIG. 17A), sleeve 88 is pulled within housing 80. However, whenconnector 702 is in an engaged state (FIG. 17B), at least end 90 ofsleeve 88 extends through an opening in the front wall of housing 80(e.g., to connect with another connector, a metal surface, etc.).

FIGS. 19A, 19B, and 19C are, respectively, a perspective view, a frontview, and a top view of connector 702 with a top surface 82′ of housing80 shown. In the depicted embodiment, top surface 82′ does not includeelectrical contacts 84. Instead, internal circuitry of a device in whichconnector 702 is disposed may be connected directly to end 92 of sleeve88.

In FIGS. 19A, 19B, and 19C, connector 702 is shown to be in its engagedstate such that sleeve 88 of assembly 120 extends out of housing 80 (asbest seen in FIG. 19C).

In another embodiment, connector 300 may be modified to include assembly120′ instead of assembly 120.

As described above, side magnets 104, 104A, 104B are slidably androtatably mounted in channels 110, 110A, 110B. In other embodiments,side magnets may be configured to rotate around a pivot.

For example, FIGS. 20A-20B depict perspective and top views,respectively, of a connector 800 with pivoting side magnets 804.Connector 800 is generally similar to connector 100 and have coremagnets 102 mounted slidably in a channel 112, substantially identicalto those of connector 100 described above. For the sake of illustration,top surfaces are omitted in FIG. 20B.

Magnets 804 are generally bar-shaped. Each magnet 804 is mountedproximate one of its ends to a pivot 812. Magnets 804 and pivots 812 arereceived in a channel 810. Magnet 804 is free to rotate about pivot 812.As will be apparent, pivots 812 and channels 810 cooperate to guidemovement of magnets 804. As will be apparent, the shape of channel 810defines the range of rotation of magnet 804.

FIGS. 20A-20B depict connector 800 in the disengaged state and FIG. 20Cdepicts connectors 800 in the engaged state. Magnets 804, 102 bias oneanother to the disengaged state. As depicted, in the disengaged state,magnets 804 are rotated such that they are generally parallel to theedge of the connector. In this orientation, magnets 804 may bemagnetically aligned with magnets 102 and magnetic attraction betweenmagnets 804, 102 may bias magnets 102 inwardly. When connector 800 ispositioned adjacent another connector, attraction between side magnets804 of the two connectors overcomes the bias between magnets 804, 102and causes the magnets 804 to rotate towards one another as depicted inFIG. 20C. In the engaged position, the magnetic poles of magnets 804 maybe oriented diagonally to the edge of connector 800. As described above,rotation of magnets 804 may reduce the inward biasing of magnets 102,which may in turn allow magnets 102 to draw one another into contact.

Other types of guides are possible. For example, magnets may be mountedto pins received in slots within the housing. Alternatively, the housingmay define a single guide wall rather than a channel.

In some embodiments, core magnets 102/140 may be replaced with contactassemblies. FIG. 21A is a top perspective view of an example contactassembly 102 and FIG. 21B is an exploded view of the same connector. Asshown, contact assembly 1002 is formed from an interleaved stack ofcylindrical magnets 1004, round conductive pads 1006, and roundinsulative pads 108. Contact assembly 1002 is cylindrical in shape.

Each magnet 1004 is substantially similar to a magnet 102 describedabove. Each magnet 1004 may attract and attach to a correspondingmagnets (i.e., with an opposing polarity) on a connector of anotherdevice to establish electrical connections between the devices throughthe magnets.

Each conductive pads 1006 is formed from a thin layer of electricallyconductive material, and is stacked in electrical communication with anassociated magnet 1004. Each conductive pad 1006 includes a tab or pinthat may be connected to a pin of an internal I/O interface of device 10(FIG. 2B), to facilitate signal transmission between contact assembly1002 and the internal I/O interface.

Each insulative pad 1008 is formed from a thin layer of electricallyinsulative material, and is stacked to provide electrical insulationbetween certain adjacent pairs of magnets 1004 and conductive pads 1006,as shown.

Collectively, the stack of magnets 1004, pads 1006, and pads 1008 allowa signal bus to be established through contact assembly 1002. Thissignal bus may conform to a conventional signaling standard such as theUniversal Serial Bus (USB) protocol. So, each conductive pad 1006 andassociated magnet 1004 may carry a signal corresponding to a particularUSB pin/wire, namely, VCC, D−, D+, GND. Thus, each contact assembly 1002may carry signals in a manner similar to a conventional 4-pin USBconnector. This allows device 100 to communicate through contactassembly 1002 using the USB protocol.

In other embodiments, contact assembly 1002 may be modified to include astack having a greater or fewer number of magnets 1004, pads 1006, andpads 1008. For example, a greater number of magnets 1004, pads 1006, andpads 1008 may be included to increase bus width and thereby increasedata throughput on the bus.

FIGS. 22A, 22B, and 22C show a contact assembly 2002, according toanother example embodiment, that may be used in place of contactassembly 1002. Each contact assembly 2002 is adapted to mate withanother contact assembly 2002 on another device. When mated, connectors2002 allow two devices to connect both mechanically and electrically.Contact assembly 2002 is cylindrical in shape.

FIG. 22A is a top perspective view of contact assembly 2002 including astack of magnets 1004 a, 1004 b, 1004 c, 1004 d (collectively referredto as magnets 1004) and an elongate plug 1010 extending from a bottomend of the stack. Each magnet 1004 in the stack includes a holeextending therethrough such that a channel is formed through the stackfor receiving plug 1010.

FIG. 22B is an exploded view of the contact assembly 2002 revealing theentire length of plug 1010 including its constituent segments 1012 athrough 1012 h. FIG. 22C shows the interconnections between segments1012 a through 1012 h of plug 1010.

In some embodiments, plug 1010 may be similar to a multi-connectionphone plug (e.g., TRS plug) or bantam-type plug. As shown, plug 1010includes a plurality of electrically isolated segments 1012 a through1012 h, each presenting an outer contact surface formed from aconductive material. The segments 1012 a through 1012 h may each form aseparate electrical connection

As before, each magnet 1004 of contact assembly 2002 attracts and attachto a corresponding magnet on another contact assembly 1002 of anotherdevice to establish electrical connections between the devices throughthe magnets.

When a top end of plug 1010 (including segments 1012 a through 1012 d)is received within an interior channel defined by stacked magnets 1004;segment 1012 a is in electrical communication with associated magnet1004 a; segment 1012 b is in electrical communication with associatedmagnet 1004 b; segment 1012 c is in electrical communication withassociated magnet 1004 c; and segment 1012 d is in electricalcommunication with associated magnet 1004 d. Meanwhile, the bottom endof plug 1010 (including segments 1012 e through 1012 h) may extend intodevice 100 allowing segments 1012 e through 1012 h to interconnect withpins of an internal I/O interface of device 100 (FIG. 38).

At the same time, as shown in FIG. 22C, segment 1012 a is electricallyconnected to segment 1012 e; segment 1012 b is electrically connected tosegment 1012 f; segment 1012 c is electrically connected to segment 1012g; and segment 1012 d is electrically connected to segment 1012 h. Inthis way, each magnet 1004 may be connected to a pin of an internal I/Ointerface of device 100 through plug 1010.

Collectively, magnets 1004 and plug 1010 allow a signal bus to beestablished through contact assembly 2002. As before, this signal busmay conform to the USB protocol, and each magnet 1004 and interconnectedsegments of plug 1010 may carry a particular USB signal (VCC, D−, D+,GND), as shown in FIG. 22B.

FIGS. 23A and 23B show a contact assembly 3002, according to anotherexample embodiment, that may also be used in place of contact assembly1002. Each contact assembly 3002 is adapted to mate with another contactassembly 3002 of another device. When mated, connectors 302 allow twodevices to connect both mechanically and electrically. Contact assembly3002 is cylindrical in shape.

As shown, contact assembly 3002 includes a sleeve 1020 that wraps atleast partly around the vertical face of cylindrical magnet 1004. Theouter surface of sleeve 1020 presents an array of contacts for carryingsignals. When magnet 1004 of contact assembly 3002 attracts and attachto corresponding magnet on a connector of another device, the contactson sleeve 1020 form electrical connections with corresponding contactson the connector of the other device.

Sleeve 1020 may be flexible. In an embodiment, sleeve 1020 may be aconventional flexible flat cable (FFC).

Sleeve 1020 may include a coating formed from Teflon or similarmaterial. Such a coating my protect sleeve 1020 from wear and tearduring operation. Such a coating may also smoothen rotations of adevices relative to one another about a vertical axis of contactassembly 3002.

At least one end of sleeve 1020 is insertable into an interior of adevice such as device 10, for electrical connection with internalcomponents of the device. In some embodiments, sleeve 1020 may wrapsubstantially or wholly around the vertical face of cylindrical magnet1004. When sleeve 1020 is wrapped substantially or wholly around thevertical face of magnet 1004, the free ends of sleeve 1020 may unite,and press together to form a single flat cable that is insertable into adevice such as device 10.

So, as will be appreciated by those of ordinary skill in the art, thelength of sleeve 1020 may be adjusted, to wrap along a desired portionof the vertical face of magnet 1004, and to extend a desired distanceinto the interior of a device.

In some embodiments, contact assembly 3002 may include a thin shiminterposed between sleeve 1020 and magnet 1004 when sleeve 1020 iswrapped around magnet 1004. The shim spans at least the portion ofsleeve 1020 expected to contact another device (e.g., by way of acomplementary connector on that device). In an embodiment, the shim maybe a thin hollow cylinder that sheathes magnet 1004. The shim may beformed of brass. However, the shim could also be formed of anothersuitable material that is sufficiently malleable to be wrapped aroundportions of magnet 1004, and is sufficiently rigid to maintain its shapeduring operation. (e.g., as contact assembly 3002 comes into contactwith other connectors). For example, the shim could also be formed ofcopper. In yet other embodiments, the shim could be formed of anothermetal, a carbon-based material, a plastic, or a composite material. Inoperation, the shim serves to spread out mechanical forces over thesurface of magnet 1004, and minimizes point loads on magnet 1004. Theshim also smoothens rotations of a device 100 relative to aninterconnected device about a vertical axis of contact assembly 3002.

In some embodiments, the shim may be integral to sleeve 1020, and may,for example, be provided as a backing or substrate of sleeve 1020. Insuch embodiments, the shim may serve as a ground plane for sleeve 1020(e.g., when the shim is formed of copper), and thereby facilitatessignal transmission through sleeve 1020. The shim may also provideelectromagnetic shielding.

Collectively, the contacts on sleeve 1020 allow a signal bus to beestablished through contact assembly 3002. As before, this signal busmay conform to the USB protocol, and each may be assigned to carry a USBsignal (VCC, D−, D+, GND), as shown in FIGS. 23A and 23B.

In one arrangement, each contact on sleeve 1020 may be used to carry aparticular USB signal (i.e., one of VCC, D1−, D1+, GND, D2−, D2+, D3−,D3+), as shown in FIG. 24A. In this arrangement, three data channels maybe provided, namely, D1, D2 and D3.

In another arrangement, the contacts on sleeve 1020 may be paired, andeach pair of contacts may be electrically connected and used to carry aparticular USB signal (i.e., one of VCC, D−, D+, GND), as shown in FIG.24B. Further, the USB signals may be assigned to the contacts in avertically symmetrical order. This redundancy of contacts and verticallysymmetry allows contact assembly 3002 to be agnostic to its verticalorientation. In other words, contact assembly 3002 may be mated toanother contact assembly 3002 to establish electrical and mechanicalconnections, regardless of their respective vertical orientations.

Of course, contact assemblies 1002 and 2002 may also be modified to havea similar redundancy and vertical symmetry of contacts (i.e., magnets1004), to thereby provide connectors that are agnostic to their verticalorientation.

The cylindrically shaped connectors described herein (e.g., contactassemblies 1002, 2002, 3002, and 300) allow device 100 to be rotatedabout a vertical axis of the connector when connected to another deviceby way of that connector. This allows the orientation of device 100 tobe adjusted relative to connected devices, without interrupting themechanical or electrical connections therebetween. Embodiments of thecylindrically shaped connectors described herein (e.g., contactassemblies 1002, 2002, and 3002) may be genderless, and may mate with alike cylindrically shaped connectors.

In other embodiments, the cylindrically shaped connectors describedherein may be modified to adhere to a protocol/connector pin-out formatother than USB or to adhere to a custom protocol/connector pin-outformat.

In some embodiments, magnet 1004 (FIGS. 23A and 23B) of contact assembly3002 may be replaced by a stack of cylindrical magnets 2004.

More than two devices may be interconnected. For example, the number ofdevices that be interconnected may be limited by total current draw ofthe devices, and the ability of particular protocols to uniquelyidentify interconnected devices. Various combinations of disparatedevices may be interconnected. Moreover, in some embodiments, multipleconnections could be formed between two devices. For example, in thecase of devices with connectors at each corner, devices may be placedside-by-side, with two pairs of corners abutting one another. Connectorsat each pair of corners may form connections. By way of example,multiple connections may be used for multiple data lanes, increasingdata bandwidth between devices, or one connector could be used for datatransmission and one for power transmission.

Although the disclosure has been described and illustrated with respectto exemplary arrangements and embodiments with a certain degree ofparticularity, it is noted that the description and illustrations havebeen made by way of example only. Numerous changes in the details ofconstruction and combination and arrangement of parts and steps may bemade.

What is claimed is:
 1. A connector for an electronic device, comprising:a housing having a peripheral surface; first and second guides definingfirst and second paths, respectively, within said housing; a magneticcontact assembly received in said housing, said magnetic contactassembly magnetically movable along said first path between a first,extended position for joining said connector in data communication withan adjacent connector, and a second position withdrawn from saidperipheral surface; a magnet received in said housing, and movable byattraction to an adjacent connector along said second path, from aretracted position to an extended position closer to said peripheralsurface and farther from said first path for magnetically holding saidconnector to said adjacent connector; said second path configured sothat said magnet and said magnetic contact assembly magnetically biasone another along said paths to said retracted position and said secondposition, respectively.
 2. The connector of claim 1, wherein saidmagnetic contact assembly comprises a core magnet slidably received insaid housing and a plurality of conductive leads, and wherein saidmagnet biases said conductive leads to form said data connection.
 3. Theconnector of claim 1, wherein said magnet is rotatably mounted andbiased to a first orientation by magnetic attraction with said magneticcontact assembly, and wherein said magnet is rotatable to a secondorientation by magnetic attraction to an adjacent connector.
 4. Theconnector of claim 3, wherein said second orientation is diagonalrelative to said peripheral surface.
 5. The connector of claim 1,wherein said second guide extends diagonally relative to said peripheralsurface.
 6. The connector of claim 1, further comprising: a third guide,said second and third guides positioned on opposite sides of said firstpath, said third guide defining a third path extending from a firstlocation proximate said peripheral surface to a second location fartherfrom said peripheral surface and closer to said first guide; and asecond magnet received in said housing, and movable along said thirdpath by attraction to an adjacent connector from a retracted position toan extended position for fixing said connector to said adjacentconnector; said third guide configured so that said second magnetcooperates with said magnet to bias said magnetic contact assembly. 7.The connector of claim 1, wherein said first guide and said second guideeach define primary and secondary paths oriented at an angle to oneanother, and wherein positioning another connector adjacent a lateralside of said electronic device causes movement of said magnet and saidmagnetic contact assembly along the respective primary paths; andwherein positioning another connector adjacent a front or back side ofsaid electronic device causes movement of said magnet and said magneticcontact assembly along the respective secondary paths.
 8. The connectorof claim 2, wherein conductive leads are positioned proximate magneticpoles of said magnetic contact assembly.
 9. The connector of claim 2,wherein said magnetic contact assembly comprises a plurality of coremagnets.
 10. The connector of claim 1, wherein said magnetic contactassembly defines a curved surface for contacting another connector, suchthat said electronic device can be pivoted about said curved surfacewithout breaking said data connection.
 11. The connector of claim 9,comprising two of said conductive leads positioned on each one of saidcore magnets.
 12. The connector of claim 1, wherein said data connectionis a USB data connection.
 13. A method of connecting electronic devices,comprising: positioning a connector of a first device adjacent aconnector of a second device; rotating a magnet of said first device bymagnetic attraction to said second device, magnetically drawing saidmagnet of said first device toward said second device to magneticallyhold said first and second devices together, thereby overcoming amagnetic bias between said magnet and a magnetic contact assembly ofsaid first device; magnetically drawing said magnetic contact assemblytoward said second device to form a data connection.
 14. The method ofclaim 13, further comprising pivoting said first and second devicesrelative to one another without breaking said data connection.
 15. Themethod of claim 13, further comprising removing said second device fromsaid first device and withdrawing said magnet and said magnetic contactassembly of said first device by magnetic attraction between said magnetand said magnetic contact assembly.
 16. The method of claim 13, whereinsaid second device comprises a magnet and a magnetic contact assembly,further comprising: magnetically drawing said magnet of said seconddevice toward said first device, thereby overcoming a magnetic biasbetween said magnet and said magnetic contact assembly of said seconddevice; and magnetically drawing said magnetic contact assembly of saidsecond device toward said first device.
 17. The method of claim 13,wherein said positioning comprises positioning said second deviceadjacent a first surface of said first device, and further comprising:repositioning said second device adjacent a second surface of said firstdevice; magnetically drawing a magnet of said first device toward saidsecond surface and said second device to magnetically hold said firstand second devices together, thereby overcoming a magnetic bias betweensaid magnet and said magnetic contact assembly of said first device;magnetically drawing said magnetic contact assembly toward said secondsurface and said second device to form a data connection.
 18. Theelectronic device comprising the connector of claim
 1. 19. Theelectronic device comprising the connector of claim 4.